45244251606421 has 4 divisors (see below), whose sum is σ = 51707716121632. Its totient is φ = 38780787091212.

The previous prime is 45244251606313. The next prime is 45244251606431. The reversal of 45244251606421 is 12460615244254.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45244251606421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45244251606431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3231732257595 + ... + 3231732257608.

It is an arithmetic number, because the mean of its divisors is an integer number (12926929030408).

Almost surely, 2^{45244251606421} is an apocalyptic number.

It is an amenable number.

45244251606421 is a deficient number, since it is larger than the sum of its proper divisors (6463464515211).

45244251606421 is an equidigital number, since it uses as much as digits as its factorization.

45244251606421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6463464515210.

The product of its (nonzero) digits is 1843200, while the sum is 46.

The spelling of 45244251606421 in words is "forty-five trillion, two hundred forty-four billion, two hundred fifty-one million, six hundred six thousand, four hundred twenty-one".